WATCHES: Severe Thunderstorm Watch Number 324

WWUS20 KWNS 181854
SEL4
SPC WW 181854
ILZ000-INZ000-KYZ000-190200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 324
NWS STORM PREDICTION CENTER NORMAN OK
155 PM CDT TUE JUN 18 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND EAST CENTRAL ILLINOIS
PARTS OF CENTRAL AND SOUTHERN INDIANA
EXTREME NORTHERN KENTUCKY

* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 155 PM UNTIL
900 PM CDT.

* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH OF
SPRINGFIELD ILLINOIS TO 30 MILES NORTH OF LOUISVILLE KENTUCKY.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

DISCUSSION...VISIBLE SATELLITE IMAGERY SHOWS THE EARLY STAGES OF
THUNDERSTORM DEVELOPMENT ALONG THE SURFACE FRONT IN CENTRAL IL.
CONVECTION WILL INCREASE IN COVERAGE/INTENSITY THIS AFTERNOON AS
SURFACE HEATING CONTINUES AND A MIDLEVEL TROUGH MOVES SEWD FROM IA.
LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREATS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 31025.


...THOMPSON

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